ia64/linux-2.6.18-xen.hg

view include/asm-m32r/page.h @ 452:c7ed6fe5dca0

kexec: dont initialise regions in reserve_memory()

There is no need to initialise efi_memmap_res and boot_param_res in
reserve_memory() for the initial xen domain as it is done in
machine_kexec_setup_resources() using values from the kexec hypercall.

Signed-off-by: Simon Horman <horms@verge.net.au>
author Keir Fraser <keir.fraser@citrix.com>
date Thu Feb 28 10:55:18 2008 +0000 (2008-02-28)
parents 3e8752eb6d9c
children
line source
1 #ifndef _ASM_M32R_PAGE_H
2 #define _ASM_M32R_PAGE_H
5 /* PAGE_SHIFT determines the page size */
6 #define PAGE_SHIFT 12
7 #define PAGE_SIZE (1UL << PAGE_SHIFT)
8 #define PAGE_MASK (~(PAGE_SIZE-1))
10 #ifdef __KERNEL__
11 #ifndef __ASSEMBLY__
13 extern void clear_page(void *to);
14 extern void copy_page(void *to, void *from);
16 #define clear_user_page(page, vaddr, pg) clear_page(page)
17 #define copy_user_page(to, from, vaddr, pg) copy_page(to, from)
19 #define alloc_zeroed_user_highpage(vma, vaddr) alloc_page_vma(GFP_HIGHUSER | __GFP_ZERO, vma, vaddr)
20 #define __HAVE_ARCH_ALLOC_ZEROED_USER_HIGHPAGE
22 /*
23 * These are used to make use of C type-checking..
24 */
25 typedef struct { unsigned long pte; } pte_t;
26 typedef struct { unsigned long pmd; } pmd_t;
27 typedef struct { unsigned long pgd; } pgd_t;
28 #define pte_val(x) ((x).pte)
29 #define PTE_MASK PAGE_MASK
31 typedef struct { unsigned long pgprot; } pgprot_t;
33 #define pmd_val(x) ((x).pmd)
34 #define pgd_val(x) ((x).pgd)
35 #define pgprot_val(x) ((x).pgprot)
37 #define __pte(x) ((pte_t) { (x) } )
38 #define __pmd(x) ((pmd_t) { (x) } )
39 #define __pgd(x) ((pgd_t) { (x) } )
40 #define __pgprot(x) ((pgprot_t) { (x) } )
42 #endif /* !__ASSEMBLY__ */
44 /* to align the pointer to the (next) page boundary */
45 #define PAGE_ALIGN(addr) (((addr) + PAGE_SIZE - 1) & PAGE_MASK)
47 /*
48 * This handles the memory map.. We could make this a config
49 * option, but too many people screw it up, and too few need
50 * it.
51 *
52 * A __PAGE_OFFSET of 0xC0000000 means that the kernel has
53 * a virtual address space of one gigabyte, which limits the
54 * amount of physical memory you can use to about 950MB.
55 *
56 * If you want more physical memory than this then see the CONFIG_HIGHMEM4G
57 * and CONFIG_HIGHMEM64G options in the kernel configuration.
58 */
61 /* This handles the memory map.. */
63 #define __MEMORY_START CONFIG_MEMORY_START
64 #define __MEMORY_SIZE CONFIG_MEMORY_SIZE
66 #ifdef CONFIG_MMU
67 #define __PAGE_OFFSET (0x80000000)
68 #else
69 #define __PAGE_OFFSET (0x00000000)
70 #endif
72 #define PAGE_OFFSET ((unsigned long)__PAGE_OFFSET)
73 #define __pa(x) ((unsigned long)(x) - PAGE_OFFSET)
74 #define __va(x) ((void *)((unsigned long)(x) + PAGE_OFFSET))
76 #ifndef CONFIG_DISCONTIGMEM
77 #define PFN_BASE (CONFIG_MEMORY_START >> PAGE_SHIFT)
78 #define ARCH_PFN_OFFSET PFN_BASE
79 #define pfn_valid(pfn) (((pfn) - PFN_BASE) < max_mapnr)
80 #endif /* !CONFIG_DISCONTIGMEM */
82 #define virt_to_page(kaddr) pfn_to_page(__pa(kaddr) >> PAGE_SHIFT)
83 #define virt_addr_valid(kaddr) pfn_valid(__pa(kaddr) >> PAGE_SHIFT)
85 #define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | VM_EXEC | \
86 VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC )
88 #define devmem_is_allowed(x) 1
90 #include <asm-generic/memory_model.h>
91 #include <asm-generic/page.h>
93 #endif /* __KERNEL__ */
94 #endif /* _ASM_M32R_PAGE_H */